Dryohalanops.] xx. dipterocarpace^. 211 



This is the original source of camphor, the Formosa Laurel-camphor 

 being a discovery of much later date. (For the story of the collec- 

 tion, Camphor language, etc., see Joiirn. Roy. As. Soc. S. Br. 26, 

 p. 35, and Jonrn. F.M.S. Mus. ix. 53, 59.) Timber highly valued 

 for building, deep red, heavy and close in texture. Bark used by 

 Malayans for walls of houses. 



(2) D. Beccariana Dyer, Journ. Bot. 1874, p. 100, pi. 142, 

 Hs. 6, 7. 



Big tree. Leaves oblong-lanceolate acuminate, base rounded; 

 nerves very numerous, fine and closely parallel, "2 to 3 in. long, 

 •5 to I in. wide. Young leaves caducously scurfy on the back; 

 petioles '2$ in. long. Panicles terminal and in upper axils, lax 

 4 in. long. Flowers white, fragrant. Sepals lanceolate, -2 in. long, 

 sub-acute. Petals thin, oblong, twice as long. Stamens half as 

 long. Fruit -5 in. long, cup very short, -i in. long, wings hnear- 

 oblong, 2 in. long, -25 in. wide. Hah. Pahang, Endau River (Wat- 

 son) ; Buntar, Rumpin (Foxworthy). Selangor, Rantau Panjang 

 (Foxworthy). Perak, Bikum (Foxworthy). Distrib. Borneo (Sara- 

 wak). Native name : Keladan. 



2. DIPTEROCARPUS, Gaertn. 



Vast trees more or less stellate-pubescent. Leaves usually 

 large, sometimes sinuate-crenate ; lateral nerves connected by 

 marginal loops. Stipules large, enclosing the terminal bud, cadu- 

 cous. Flowers, the largest in the order, white or pink, very 

 fragrant. Calyx-tube free. Petals contort at base, pubescent on 

 the back. Stamens numerous ; anthers linear, equivalved, acumin- 

 ate. Ovary 3-celled; ovules 2 in each. Fruit large, enclosed in 

 calyx-tube but free ; wings 2, long. Species 60, Indo-Malaya. 



The timber is inferior. The resin takes the form of wood-oil 

 and is obtained by cutting a large hole in the tree-trunk and burning 

 it within. It is known as Minyak Keruwing. 



Ripe fruit globose, not angled or winged. 



Young branches, petioles and nerves stiffly hairy 

 Fruit quite glabrous 

 Fruit stellate hairy 

 Young branches and leaves pubescent 

 Branches glabrous 

 Ripe fruit with 5 tubercles on top, globose 

 Ripe fruit oblong, 4-angled, glabrous 

 Ripe fruit oblong, 4-angled, grey-velvety 

 Ripe fruit prominently 4-winged. 



Leaves glabi-ous ; fruit very large winged to base (8) D. grandiflorus 



Leaves glabrous ; fruit large not winged to base . (9) D. Kunstleri 

 Leaves hairy beneath ; fruit unknown . . (10) D. rigidus 



Leaves pubescent on nerves small ; fruit small 



pubescent (n) D. costatus 



(i) D. crinitus 



(2) D. Duperreanus 



(3) D. Skinneri 



(4) D. Kerrii 



(5) D. cornutus 



(6) D. fagineus 



(7) D. oblongifolius 



